I have two Axiom Monsoon Hydracore 45 bags, they hold 90 liters total for both bags, in those bags I fill them about 3/4ths full and carry a total of 30 pounds including the bags themselves (all my weights include the bags).
I then have a Topeak Tourguide DX handlebar bag that holds 8.1 liters, I have it jam full with 9.8 pounds of stuff in it of the 11 pounds it can hold. I also have to give a shout out to Topeak, I changed my bag from one bike (one that got totaled) to my new bike and I had cut the straddle cable to fit the old stem, but it wouldn't fit the new one, Topeak sent me out a new cable for FREE even though the warranty expired 2 years ago, what a great company.
I also have a Specialized Top Tube Pack that holds .75 liter and it's jammed full, not sure of the weight but not much.
And my last bag is a Topeak Aero Wedge large, I think it holds 1.97 liters and it too is jammed, weight is at 3 pounds.
I carry a Marmot Tungsten 2 5 pound tent; a Alps Mountaineering Fusion 40 sleeping bag at 2 pounds, but I don't think it weighs that much; and a Therm A Rest Base Camp that weighs 3.6 pounds (I had to go with the thicker one due to lower back fusion issues that couldn't find comfort in the thinner ones). Those items do not get stuffed into a pannier.
I carry 120 ounces of water, plus the bottles they're around 8 pounds total.
The bike weighs 35 pounds.
Including the bike I have about 100 pounds round up, plus I weigh 173 with cycling clothes on.
I do carry 3 days worth of food, but I start looking for food after the 2nd day is consumed, I always try to have an extra day of food just in case. The food is included in the pannier weight.
Water weight I could lose about 60 ounces if I used my Sawyer water filter since I'm near bodies of water either on the way or at campsites, or I can pop into any fast food place and get water for free, but I prefer knowing that I have plenty of water...I'm weird that way.
I got my Axiom Monsoon Oceanweave Hydracore bags on a crazy sale for just $120 for the pair including shipping, the retail was $230 for the pair plus shipping. These bags are fantastic too, they took a 2 hour downpour without rain flys and nothing inside was remotely damp. I did buy a set of rain flys for them but not for rain, but rather to protect the outside of the bag from abrasion and dirt, plus they're a neon yellow so they show up better. They are a roll down type of bag. No matter what panniers you buy you should put stuff in zip lock bags to make sure nothing gets wet, or something inside ruptures and messes up your stuff. I also line the bags with a brown yard waste type of trash bag, this is to prevent stains and smells getting on the bags. I kind of overkill with this bag stuff but I ran into a lot of touring people who after bad experiences now do all the plastic bagging stuff. Anyway I am very pleased with those Axiom bags, PLUS, I lost one of the bottom bag slide supports because I forgot to tighten the adjusting screw, Axiom sent me TWO for FREE! This was my fault for losing it and my warranty was gone, but they sent them anyways, another great company.
I just got a 21 watt Nekteck solar charger and a Ravpower 10,000 powerpack battery, I was able to charge up my Iphone from 5% to 100% in 4 hours, just on solar alone, it normally takes 3 hours off the wall! If you got rechargeable battery stuff and aren't always near electric, wow, that particular NekTeck works fantastic, I was surprised as to how well it worked after reading complaints and worrying about other brands now working well at all and wondering how would this one work, I would have sent it back, but it works beyond what I hoped for, which all the reviews said it was a good choice. The charger wasn't expensive at only $42 and I saw a few that were more than twice that price and didn't fair as well; the battery pack I got was the cheapest one I could find at $14, it's just in case I don't have sun and I need to charge something. Those small one panel solar chargers, don't waste your money, a friend of mine had several of those and kept sending them back because he would try to charge his phone and after setting out all day for 12 hours it would only be 20 to 25% charged.
The only weight I'm considering adding is very small handgun, either a Glock 42 or a Bond Arms Backup derringer that shoots 45 acp instead of 9mm like the Glock; I haven't decided yet on that. I'm worried about wild animals than people.